Heman a



(No Model.)

H. A. BENEDICT. VDOOR.

No. 440,245. Patented Nov. 11, 1890.

UNITED STATES 1 ATENT FFICE.

HEMAN A. BENEDICT, CF SYRACUSE, NEWV YORK, ASSIGNOR TO CLARENCE V. KELLOGG, OF SAME PLACE.

DOOR.

SPECIFICATION forming part of Letters Patent No. 440,245, dated November 11, 1890.

Application filed January 21, 1890. Serial No. 337,612. (No model.)

To aZZ whom it may concern.-

Be it known that I, HEMAN A. BENEDICT, a citizen of the United States, residing at Syracuse, in the county of Onondaga, State of New York, have invented certain new and useful Improvements in Doors, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in doors; and it has for its object, primarily, the saving of material, forming a door of what would otherwise be waste pieces and furnishing to the trade what to all outward appearances is a thick door, but in reality composed of thin pieces of lumber. A door thus constructed also forms to a certain extent a barrier against fire as well as heat and cold, being formed with air-chambers, as will be hereinafter mentioned.

Other objects and advantages of the inven-* tion will appear in the following description, and the novel features thereof will be particularly pointed out in the claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of ref erencemarked thereon, form a part of this specification, and in which-- Figure l is a side and edge elevation of a door embodying my improvements, portions of the door in the side view being broken away. Fig. 2 is a cross-section on the line 00 w of Fig. 1. Fig. 3 is a detail in perspective showing a portion of one of the side stiles. Fig. 4 is a like view of a central stile, and Fig. 5 is a sectional perspective view of a modification.

Like letters of reference refer to like parts in all the figures of the drawings.

Referring now to the details of the drawings by letter, A designates one of the side stiles, which is constructed as shown best in Fig. 3, and is composed of the two pieces A A separated by and held at the proper distance apart to form a door of the desired thickness by means of the strips a, one of which is flush with the outer edge of thetwo pieces A A as shown in Figs. 2 and 3, and the other arranged so as to form a mortise or groove upon the inner edge, as shown at a in Fig. 3. p

The center stile B is formed substantially the same as the side stile A, being composed of the two strips B and B held together the desired distance apart by means of the narrow strips 6, arranged between them, as shown best in Fig. 4, leaving a mortise or recess or groove 11' upon each side of the stile, as seen best in said Fig. 4:.

The panels are of the ordinary construction, and are adapted to be fitted within the mortises or grooves above mentioned in the stiles.

The parts are assembled to constitute a door in the following manner: Mortise-blocks C are arranged, as shown best in Fig. 1, to connect the longitudinal and the cross pieces and by re-enforcing blocks C, said. blocks being secured to one part and glued as the parts are put together, the parts then being clamped or otherwise held together until the glue has set. Nails or other securing means other than glue may be employed, if desired; but the glue is preferred, as it provides perfect outside finish, avoiding nail holes and heads to be puttied and otherwise covered up.

It will of course be understood that the end stiles or cross-pieces D of the door are constructed in the same manner as the side stiles, having one strip a flush with the outer edges of the two pieces A and A It will be observed that a door constructed as above described may be made at a minimum cost, utilizing narrow and short waste pieces, and permitting me to construct a door, say, two inches in thickness, which to all intents and purposes will be as strong and durable as a solid door, being less liable to warp, and being formed with air chambers or passages which serve to resist the heat or cold and fire.

In Fig. 5 I have shown a construction wherein I employ double panels, forming the stiles as above described, but separating them by means of a spacing-block E. This provides a large air-chamber E between the panels.

What I claim as new is-=- 1. Ina door, a stile formed of a pluralityof pieces, with an air-space between them and a gogtise upon one edge, substantially as speci- 2. In a door, a stile formed of a plurality of pieces forming a mortise upon one edge and one of the intermediate strips having its outer edge flush with the outer edge of the inner and outer pieces of the stile, substantially as specified.

3. In a door, composite stiles and rails and mortise-blocks arranged within the same for connecting them together, substantially as specified.

4. In a door, composite stiles and rails, mortise-blocks arranged within the same and connecting them together, and re-enforcing blocks connecting the center stiles, center rails, and cross-pieces, substantially as described.

5. A door formed of composite stiles and end pieces having mortises upon their inner edges, a composite rail having mortises upon its opposite edges, panels held in said mortises, and interior mortise-blocks for holding 

